What are 5 inventions from the 19th century and how will they make an impact on the society?

1. The cotton gin - It impacted society in terms of the reduction of labor that removed seeds.

2. Photography - It allows people to accurately familiarize themselves with far-off landscapes and cultures. Enabled the diffusion of objective information through the visual capture of things as they really are.

3. Electricity -  Electricity helped to usher in industrial productivity on scales never before seen. Industries have been created to generate electricity for public use or transmit data through electrical signals .

4. The telephone - Quickness in communication, business, easier communication in wars

5. The locomotive - goods were transported overland easier reduction of labor.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;